Drying apparatus.



E.- B.sT0NB. DRYING APPARATUS.

APPLICATION FILED DEC. 30. 1913.

Patented Nov. 17, 1914.

WITNESSES:

\ accompanying drawings,

" STATES PATENT OFFICE. v

ELMER B. STONE, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

To all whom it may concern:

Be it known that I, Emma B. STONE, a citizen of the United States, and a resident of New Britain, in the county of Hartford and State of Connecticut, have invented a new and Improved Drying Apparatus, of which the following is a specification.

My invention relates more especially to that class of apparatus employed for removing moisture from metallic articles, such as lock parts, keys and other similar hardware, that have been wet during the process of manufacture or finishing, and an object of my invention, among others, is to provide a device of this class that shall be particularly efiicient in its operation and that shall rapidly efiect its purpose.

One form of apparatus embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the in which Figure 1 is a view in central longitudinal section through a drier embodying my invention. Fig. 2 is a view in cross section on plane denoted by dotted line 22 of Fig. 1. Fig. 3 is a detail side view of a portion of the shell with parts broken away to show construction, some of the parts being also 4 shown in dotted outline.

In the accompanying drawings the numeral 6 denotes a casing, preferably rectangular in form, and having within its lower part steam pipes 7, or other meansfor supplying heat to the interior of the casing, the pipes being supplied with steam passing through a supply pipe 8.

A rotary receptacle is located within this case, with its ends projecting outside of the casing and supported in bearings at the upper ends of the supports 9. This receptacle may be rotated as by means of a belt 10 passing around a pulley 11 secured to one end of the receptacle. A hopper 12, located at one end of the receptacle, has a tubular end. 13 projecting within the tubular end of the receptacle and of a form to perimt ro- 'tation of the receptacle thereon. A support 1 1 maybe employed to retain the hopper in position. The receptacle consists of an inner tubular part 15, preferably, round in cross section and composed of w re netting or-cloth secured to the end pieces 16, one of which, in the construction herein shown, con prises the pulley and each of which consti- Specification of Letters Patent.

articles to travel DRYING APPARATUS.

Patented Nov. 17, 1914.

Application filed December 30, 1913. Serial No. 809,477.

tutes the bearings for the receptacle. An outer tube 17, composed preferably of wire netting or cloth surrounds the inner tube 15, and it is preferably square in cross section and the mesh of the material is somewhat coarser than that of the tube 15. This outer tube 17 is secured to the end pieces 16, in the construction herein shown a sleeve 18 being employed, this sleeve being secured within the end pieces and projecting beyond those sides of the end pieces facing each other,

and the tube 17 is secured to the projecting ends of these sleeves.

A feed screw 19 is secured within the inner tube 15, extending preferably from end to end thereof for the purpose of noving the articles placed within the hopper 12 from the inlet end of the tube to the opposite or delivery end thereof;

A shell 20 is located outside of the outer tube 17 the smaller ends of this shell being secured in any suitable mannerto the projecting ends of the sleeves 18. This shell is preferably round in cross section and tapers gradually from the sleeves 18 to its largest dimension preferably at its lengthwise center, and wings 21 are secured to the i inner wall of the shell, extending in a spiral direction thereon, from the inlet end and terminating preferably at a point some little distance beyond the lengthwise center there of. The sleeves 18 are square in cross section as to those ends opening toward each other, the outer tube 17 and the ends of the A shell fitting over these squared end portions of the sleeves.

A discharge mouth 22 is secured to theend piece 16 located at the discharge end of the shell, this outlet consisting of a funnel shaped piece constructed of wire cloth or netting flaring outwardly and having obstructions 23 so located that articles passing out of the inner tube 15 will be obstructed in their movements, until they reach a space as 2 1 wide enough to permit their free passa'ge. J

. It will be understood that the apparatusis for the purpose of drying metallic articles after they have been washed during a certain process in the manufacture. The articles are introduced at the hopper 12, and the shell or receptacle 20 being rotated the action of the feed screw 19 causes the outlet 22. Sawdust or other drying mafrom the hopper to the shell surrounding the tube terial is placed within the shell 20 and, in the rotation of this shell, falls upon the fiat surfaces constituting the outer tube 17 and sifts through the netting composing the square tube onto the inner tube 15 and dust passing beyond the center of the shell and falling on to its sloping surface 25 is carried by gravity backwardly to the center, from which point the action of the spirally formed wing; 21 carries the sawdust, as to a greater part. backwardly toward the inlet end of the receptacle. This manipulation of the sawdust or like drying material by the spiral wings 21 carries the sawdust to the upper side of the receptacle and sprinkles it through the netting onto the articles from the inlet end to a point beyond the center of the shell. The heat within the receptacle will be so graduated that the sawdust, moistened by contact with the wet articles will be ilried in its passage backwardly along the she I. While I have shown and described herein a preferred form of mechanism for carrying out my purpose, this may be changed to a greater or lesser degree and yet be within the spirit and intent of the invention.

'The apparatus herein illustrated and described constitutes a drier, that after being charged with sawdust, does not thereafter require to be recharged except to replace the sawdust'that passes 'ofl in a fine floury dust, which amount will be inconsiderable. The sawdust is automatically carried and distributed at the proper places and the fine dust is carried out by the air currents with out settling in the shell within which it is used.

I claim- 1. A drying apparatus including a perforated tube, means for rotating the tube,

means for supplying articles to the tube,-

means for causing said articles to travel through the tube, an imperforate shell secured to rotate with the tube, means within the shell to sprinkle a drying material on articles within the tube, and means for causing the drying material wardly as it is shaken from said articles.

2. A drying rated tube open at its ends, means for rotating. the tube,

said articles to travel through said tube, a

and flaring outwardly from its inlet end toward the opposite end thereof, means for rotating the shell, andlmeans within said shell for carrying a drying material to a point above the articles rated tube, means to travel backapparatus including aperfo means for introducing articles -to the tube at one end, means for causing and to sprinkle it on to the articles Within the tube.

3. A drying apparatus including a perforated tube open at its ends, means for rotating the tube, means for introducing articles at one end of thetube, a shell surrounding the tube and flaring outwardly therefrom from its inlet end toward the opposite end thereof, means for rotating the shell, and wings located within the shell to carry a drying material to a location to be sprinkled upon articles within the tube.

4. A drying apparatus including a perforated tube open at its ends, means for rotating the tube, means forintroducing articles at one end of the tube, a shell surrounding the tube and secured thereto and flaring outwardly therefrom from its inlet end toward the opposite end thereof, and wings spirally arranged within the shell to carry a drying material to a location to be sprinkled upon articles within the tube.

5. A drying apparatus including a perforated tube, means for rotating the tube, means for introducing articles at one end of the tube, a shell surrounding the tube and tapering from its opposite ends to a larger diameter toward the lengthwise center thereof, means for rotating the shell, and means within the shell for carrying a drying material to a location above the articles within the tube.

6. A drying apparatus including a perforated tube, means for rotating the tube, means for supplying articles at one end'of the tube, a shell surrounding the tube and secured thereto, said shell tapering from its ends to a larger dimension toward its center, and wings located within the shell to carry a drying material from the lower part thereofbto a location above the articles wit in the tu e.

7. A drying apparatus including a perfofor rotating the tube, means for supplying articles to said tube at one end thereof, .a shell surrounding said tube and secured thereto, said shelltaperingfrom a smaller dimension at the ends there- Of to a larger dimension wise center, and spiral wings secured within the shell and extending backwardly from the lengthwise center toward the inlet end.

8. A d ying apparatus including a casing, an inner within the casin means for rotating the tube, means for-introducing articles to the tube, means for causing articles to travel along the tube, means for supplying heat to said casing, and an outer rectangular in .shape in rounding saidinner tube. I

9. A drying apparatus including a casing, means for supplying heat to said casing, an inner perforated tube rotatably mounted in the casing, means for rotating said tube, an

cross section, surtowardits lengthv perforated tube rotatably mounted perforated tube,

outer perforated tube, rectangular in shape in cross section, surroundingsaid inner tube,"

a shell surrounding said tubes and tapering ,from the inlet end thereof to a larger diing, an inner perforated tube rotatably mounted in the casing, an outer perforated tube secured to the inner tube, means for rotating said tubes, a shell surrounding said tubes and tapering from its ends to a larger dimension toward the lengthwise center thereof, means for rotating said shell, and wings spirally arranged within the shell to carry a drying material to a location above the articles Within said tube.

11. A drying apparatus including a perforated tube, means for rotating the tube,

means for supplying articles to the tube,

means for carrying the articles through the tube, a rotatable shell surrounding the tube to receive a drying material, and means within the shell for preventing exit of the drying material therefrom.

12. A drying apparatus including a perforated tube, means for rotating the tube, means for introducing articles at one end of the tube, a shell surrounding the tube and tapering from its opposite ends to a larger diameter toward the lengthwise center thereof, and means within the shell for carrying a drying material to a location above the articles within the tube.

13. A drying apparatus including a casing, means for supplying heat to said casing, an inner perforated tube rotatably mounted in the casing, means for rotating said tube, an outer perforated tube rectan gular in shape in cross sect-ion surrounding said inner tube, a shell surrounding said tubes and tapering from the inlet thereof to a larger dimension toward the center, and

means within the shell to carry a drying material to a point above the articles within the tube.

14. A drying apparatus including a casing, means for supplying heat to said casing, an inner perforated tube rotatably mounted in the casing, an outer perforated tube secured to the inner tube, means for rotating said tubes, a shell surroundin said tubes and tapering from its ends to a finger dimension toward the lengthwise center thereof, means for rotating the shell, and means within the shell for causing material to travel backwardly therein.

15. A drying apparatus including aperforated tube, means for rotating the tube, means for supplying articles to the tube, an imperforate shell secured to rotate with the tube, means within the shell to sprinkle a drying material on articles within the tube, and means for causing the drying material to travel backwardly as it is shaken from said articles.

16. Adrying apparatus including aperforated tube, means for rotating the tube,

means for supplying articles to the tube, an imperforate shell secured to rotate with the tube, and means within the shell to sprinkle a drying material on articles within the tube. a

17. A drying apparatus including aperforated tube open at its ends, means for rotating the tube, means for introducing articles to the tube at one end, an imperforate shell surrounding the tube and flaring outwardly from its inlet end toward the o posite end thereof, means for rotating the s iell, and means within said shell for carrying a drying material to a point above the articles and to sprinkle it on the articles within the tube;

ELMER B. STONE.

Witnesses:

RUTH M. BURKARTH, A. FLoRENcE. 

